Portion of a shoe outsole



FIG. 1 is a first perspective view of a portion of a shoe outsole showing my new design;

FIG. 2 is a bottom view thereof; and,

FIG. 3 is a second perspective view thereof.

The broken line immediately adjacent to the front of the shaded area in the forefoot region and the broken line immediately adjacent to the back of the shaded area in the rearfoot region represent unclaimed boundaries of the design. The broken line showings of the wavy tread pattern within the shaded areas are for illustrative purposes only and form no part of the claimed design. The broken line showing of the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe outsole, as shown and described. 